Filling trim holes without welding?

[Secret Chimp]

I want to leave the trim off of my wagon for awhile but I don't want to permanently weld up the holes. I do want to seal up the holes to keep water from getting in too much (I live near Seattle).
Is there any kind of trim snap or nut type thing I can just screw or pop in the holes, or would I be better off using some kind of filler I could knock out with an awl or something later? I don't mind if I have "warts" on the car, it'll look better than all of the holes I have right now.

 

[dave5237]

hello. check out this web site and search for snap in plugs. it may be what your looking for temporary. www.mcmaster.com

 

[OG max wedge]

i've used pop rivets in the past, they were pretty simply to just drill out later.

 

[Big Jim]

If you're going to put the trim back on later might suggest a dab of clear silicone under the rivets/plugs to seal the panel.

 

[Big G]

I have been using plastic pop rivets to fill the rocker trim holes on my 65